smallwood



Patented Aug. 12, 1919.v

2 SHEETS-SHEET 1.

A. sMALLWoon.

FUHNACE FOR HEATING AND TREATING ARTICLES.

APPLICATION FILED SEPT19| 1916- v 1,312,927.

A. sMALLwoon FURNACE FRLHE'TING AND'TREATING ARTICLES.

APPLICATION FILED SEPT. I9. I9I6.

Patented Aug.' 12, 1919.

2 SHEETS-SHEET 2.

. articles, such as fguns, locomotive connectingrods, and the like, and which, when heated;

Y ALFRED sMALLWooD, or iiieriieATE,Y LoNDoN,l ENGLAND.

FUENAGE rou HEATING AND TREATiNe ARTICLES.

'Specification of Letters Patent. `1. ;,|,1;in1jed Ag,` 12, 1919.

vApplication filed SeptemberrlS, 1916. Serial No. 1121,073. I.

To all whom t may concern.'

Be it known that I, ALFREn SMAiiLwooD,

a subject of the Kingdom of .Great Britain,

residing at 42 Hargrave Park, I-I'ighgate, London, N., in the` county of Middlesex, England', have invented a certain new or Improved Furnace for HeatingV and Treat-- ing Articles, ofv which thevfollo'wing is a, specification.

This invention comprises a new or im. proved furnace for heating, hardening, tem-` pering, annealing, carbonizing, vand 'other processes, and ithas forits purposetoprovide a furnace particularly adaptedv for-the satisfactory heating or treatment. of long or, treated in a horizontal position, are liable towarp;A W'ith thisrfobj ect in view, therefore, the articles are adapted to be heatedV lwhile in a vertical position in which theyt maybe intension, and 'the furnacefof the. present invention lfurthermore provides forU aparticularly even and eifective heating along 4the entire'length of thevarticle.

In order that this; invention may be clearly understood and f yreadily carriedjinto practice,y reference mayA be had to Y. the append'- edxexplanatory; sheetsV of drawings, upon whichz-V Figure ly is asectional elevation ofthe furnace. 1 f i. Fig. 2 is a sectional View taken on line -y 'offFigz 1;`

Fig. 3 is a sectionalview` taken along the line .e-.z'of Fig. 1.

In a convenient embodiment of the presentinvention-,the'furnace takes the form of a vertical building having a central 'vertical heatingchamber. a. In the wall or -wallsof the building surrounding the heating-chamber.; a combustion Vchamber or combustion chambers iseor are incorporated. This combustion chaiiiber'ork these combustion cham` bers are adapted toreceive ame .or furnace gases, which passes or pass along the combustion` chamber n or chambers, andv subse-Y quentlyr into heat flues, which` are also disposed in the wallrorwalls .of the building,

and whicliiheat flues 'are in communication with the 'heating Vchamberrby apertures or ports disposed at intervals along its vertical length. Theseapertures or portsare adapted to be individually regulatedso that more or less/heatl can be supplied'at any :level in the heating chamber..

. Conveniently the primary source of heat isfintroduced at a mid level in relation to the height of the heating chamber..v ThereA may be at one, Orat each yof two or any suitable yiiuinber of points in the circumference or` perimeter of the furnace, two inletsfor thel primary heating medium.' In thearrangement shown in Figs. land 2, two inlets, 9 9 are disposed at each 'of two diametricallyf opposite points in the furnace. 'These are superposed, and one may communicate with, a combustion chamber b extending upwardlyl substantially tothe top of the furnace, the

other*` communicating with a combustion chamber@ extending downwardly substanff tially to the bottom of the furnace.. g gf represent baffles. 'Each-'upwardlyextending l i combustion chamber b may/communicate at;

the top with two heatv fluesfcZ, d which.V extend downwardlyioiie on` eachfsideof the.`

combustion chamber. In like mannereach downwardly extending combustionchamber' c, may communicate. at the bottomwithtwo heat fluesve e disposed one on eachside. of`

the combustionI chamber` and extending l up;Y

wardly.l A series of; distributing. and stag;- gered ports f, each. individually regulable,;

offer -communi-cation betweenthe several.

heat flues cl, (Ld, d, e, e, e, e and the interior; of the -heating chamber c. g Fig.2,. indicates aform of bung, and provision'foi'fopf erating same which, may be yincorpoli-atedfor; regulating the juncture ofeachof 'the .port s,

f with its respective-heatflued orY c gtoprof vide for thisindividualregulation.

The outlet oroutlets ich from thegheating chamber c may be disposed-at: a `midposi@` i tion in its height and twoarepreferablyinf corporated, at diametrically opposite pei-nts.

The furnace may bejadaptedtoworkfbygaseous, liquid, or` solid fuel., z', z', beinggaseous or liquid fuel fittings. in thelvarrangefy ments shown in thedrawings, and provision may be, v made forheating theA air for -combustion. Fonthispurpose-vertical-air fiuesa 33j, j, y' vmay be incorporated -i-n-thefwall or.

walls'of the furnaceY at positionsadj ac'ent 136 and jonv4 the outersides of, `the yheatf-ii'ues di' e, and thus., the airis` heated byfl radiation,l

and at the same ,timel thepijadiationloffheat.

externally Of thefunacfbuildin'gs counter- Y acted. The air may kprimarily enter thea? nace at 7cl and may passupwardlyor downwardly alongl fiues Z which r communicate@ at. their upper; or lower-.extreniitiesvwith the. fines. ,fi/.aud .Said thee V`cernnimm:i.@'a1e,=u=.

their other extremities with the space in the vicinity of the fueliittings e', z', as for instance by ports m. n, n, a, n represent sight holes. Y

The furnace may be closed at the top by a suitable removable closure member 0, and in such closure member. other minor removable closure members p may be incorporated so that the latter may facilitate individual introduction of the goods when several articles vare heated at the same time, whilethe main closure member 0 may permit of the introduction of a single larger article.

It will be seen that in operation air is sucked in through openings la and such air passes around the vsight holes m through the passage Z and through the passage s at the bottom of the furnace to the duct y', reference being had to Fig. 3. Through duct the air reaches the uppermost, or lowermost part of said ducts and emerges into the passage c at a point adjacent to the burners z', mingling with 4the fuel and producing an intensely hot flame which is projected down the passage 0 until it reaches a passage t, situated at the lowermost portion of c and so passes into the passage e from which it is distributed through the ports f into the main chamber a, the product of combustion passes out' through the exit It from which they may be conducted into any suitable smolrestacl.

It will be noted that by the above arrangement the air, by virtue of passing through the passage Z and up through the passage j, before combining with the llame distributed byl theburners z', is heated by reason of the vicinity of, the heat conducting passages c and e.

It will also be noted that l have merely described the action of the air and products of combustion upon one of the burners and associated passages, it being of course understood that a similar action takes place among all of the burners and passages.

.The tank forl containing oil may have a hollow wall 6 which may contain water for cooling purposes.

What I'claim as my invention and desire to secure by Letters Patent'is:--

1. A furnace comprising a vertically disposed heating chamber, a source of heat located outside-of saidchamber and approximately intermediate its extremities, combustion chambers extending upwardly and downwardly from said source of heat, flues provided with ports extending through to the heating chamber, such fines being in communication with the outer end of the combustion chamber. y

v2., A furnace comprising'a vertically disposedV heating chamber a source of heat located outsideof said chamber and approximately intermediate its extremities, combustion chambers -located at diametrically opposite sides of said heating chamber, a pair of Hues provided for each of said combustion chambers, such iiues being formed with ports extending through to the heating chamber, each pair of iues being in communication with the outer end of its respective combustion chamber.

3. A furnace comprising a vertically disposed heating chamber, a source of heat located outside of said chamber and approximately ,intermediate its extremities, combustionx chambers extending upwardly and downwardly from said source of heat, fines provided with ports extending through to the heating chamber, said iues being in com-` munication with the outer end of the combustion chamber, and air passages having communication with the outer atmosphere at one of their extremities, their opposite endsterminating in the combustion chamberadjacent to the source of heat, such air passages being located in proximity to the combustion chambers and flues throughout their entire-length whereby the air traveling through them will become heated before being introduced into kthe combustion chambers.

4c. A furnace, comprising a vertically disposedfheating chamber having heat distributing ports locatedy at intervals in the height of the chamber, means provided in connection 'with said ports for' regulating the flow of gases' therethrough, and vertical heat fines provided in the wall of the chamber being in communication with said ports.

5. Afurnace, comprising a vertically disposed heating chamber, vertical. combustion chambers, a" source of heat located within said combustion chambers, and' flues vided with ports extending through to the heating chamber, said flues vbeing in communication with the outer end of the combustion chambers. f Y

6. A furnace, comprising aV goodschamber, vertical combustion chambers -communicating with said goods chamber, and vertical heat lues communicating with said goods chamber and combustion chambers, the combustion chambers and heat lues being located within the wall of the goods chamber.

' 7.V A furnace, comprising a vertically disposed heating. chamberfcombustion chambers located at diametrically opposite sides of said heating chamber, a source of hea-tv located in said'combustion chamber, a pair of flues provided for each of said combustion chambers, said iues being formed withl ports extending through to the heating chamber, each pair of flues being inV communication with the outer end of its respective combustionv chamber.

8.y A furnace, comprising a vertically disposed heating chamber, combustion chambers, a source of heat located in said combustion chambers, iues provided with ports exprotending through to the heating chamber, said flues being in communication with the outer end of the combustion chamber, and air passages having communication With the outer atmosphere at one of their extremities, the opposite ends terminating in the combustion chamber adjacent to the source of heat, said air passages being located in proximity to the combustion chambers, and flues throughout their entire length, Whereby the air traveling through them will become heated before being introduced into said combustion chambers. v

9. A furnace, comprising a vertically dis` posed heating chamber, combustion chambers, a source of heat located in said combustion chambers, heat fines provided With ports extending through to the heating chambers, said flues being in communication with the outer end ofthe combustion cham* bers, and air flues disposed Within the Wall of the furnace so as to be heated by said heat flues.

10. A furnace, comprising a vertically disposed heating chamber, combustion chambers, a source of heat located in said combustion chambers, heat flues provided With A ports extending through to the heating chambers, said flues being in communication with the outer end ofthe combustion chambers, and air flues disposed Within the Wall of the furnace on the outer side' of such heat flues.

In Witness vvhereofl have hereunto set my hand.

ALFRED SMALLWOOD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

